package com.hw.frame.app;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Stack;

import org.kymjs.kjframe.http.HttpParams;



import org.kymjs.kjframe.utils.StringUtils;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

/**
 * 应用程序Activity管理类：用于Activity管理和应用程序
 * 
 * @author liux (http://my.oschina.net/liux)
 * @version 1.0
 * @created 2012-3-21
 */
public class AppManager {

	private static Stack<Activity> activityStack;
	private static AppManager instance;

	/**
	 * 当前用户,指向user对象
	 */
	public static final String CURRENT_USER_KEY = "current_user_key";
	/**
	 * 选择的时间和日期
	 */
	public static String Date_TIME;
	
	public static String TAB_TITLE;
	/**
	 * 请求验证码 ====>字符串
	 */
	public static final String VERIFY_KEY = "verify_key";

	/**
	 * 城市,火车站,机场 指向 city集合
	 */
	public static final String CITY_ABOARD_STORE_KEY = "city_aboard_store_key";

	/**
	 * 业务类型
	 */
	public static final String BUSSINESS_KEY = "bussiness_key";
	/**
	 * 缓存临时静态数据
	 */
	private Map<String, Object> cache = new HashMap<String, Object>();

	/**
	 * 将数据加入缓存
	 * 
	 * @param key
	 * @param data
	 */

	public void addCache(String key, Object data) {
		cache.put(key, data);
	}
	
	

	/**
	 * 通过键从缓存中读取数据
	 * 
	 * @param key
	 * @param data
	 * @return
	 */

	public Object getCacheByKey(String key) {
		return (Object) cache.get(key);
	}

	

	/**
	 * 移除数据
	 * 
	 * @param key
	 */
	public void removeCache(String key) {
		cache.remove(key);
	}

	/**
	 * 构建请求参数，如果有请求验证码，则所有请求中加入请求验证码
	 * 
	 * @return
	 */
	public HttpParams buildRequestParameter() {
		String verify_code = (String) cache.get(VERIFY_KEY);
		HttpParams param = new HttpParams();
		if (!StringUtils.isEmpty(verify_code)) {
			param.put("verify", verify_code);
		}
		return param;
	}

	
	private AppManager() {
	}

	/**
	 * 单一实例
	 */
	public static AppManager getAppManager() {
		if (instance == null) {
			instance = new AppManager();
		}
		return instance;
	}

	/**
	 * 添加Activity到堆�?
	 */
	public void addActivity(Activity activity) {
		if (activityStack == null) {
			activityStack = new Stack<Activity>();
		}
		activityStack.add(activity);
	}

	/**
	 * 获取当前Activity（堆栈中�?后一个压入的�?
	 */
	public Activity currentActivity() {
		Activity activity = activityStack.lastElement();
		return activity;
	}

	/**
	 * 结束当前Activity（堆栈中�?后一个压入的�?
	 */
	public void finishActivity() {
		Activity activity = activityStack.lastElement();
		finishActivity(activity);
	}

	/**
	 * 结束指定的Activity
	 */
	public void finishActivity(Activity activity) {
		if (activity != null) {
			activityStack.remove(activity);
			activity.finish();
			activity = null;
		}
	}

	/**
	 * 结束指定类名的Activity
	 */
	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
			}
		}
	}

	/**
	 * 结束所有Activity
	 */
	public void finishAllActivity() {
		for (int i = 0, size = activityStack.size(); i < size; i++) {
			if (null != activityStack.get(i)) {
				activityStack.get(i).finish();
			}
		}
		activityStack.clear();
	}

	/**
	 * 退出程序
	 */
	public void AppExit(Context context) {
		try {
			finishAllActivity();
			ActivityManager activityMgr = (ActivityManager) context
					.getSystemService(Context.ACTIVITY_SERVICE);
			activityMgr.restartPackage(context.getPackageName());
			System.exit(0);
		} catch (Exception e) {
		}
	}
}